Machine weapon



May 14 1940 H. scHMElsSER 2,200,780

MACHINE WEAPON Filed Dec. 50, 1936 ngz M'ACHINE WEAPON Hugo Schmeisser, Suhl, Germany Application December 30, 1936, Serial No. 118,370 In Germany September 3, 1935 5 Claims.

This invention relates to machine weapons, and more particularly to machine pistols, which are furnished with a shoulder support that may be moved into the operable position as desired.

p It is the object of the invention to construct "5 the shoulder support in such fashion that the same on the one hand is always connected with the weapon but on the other hand will not interfere with proper manipulation oi the weapon either in the operable or in the non-operable positions.

Weapons of this character have already been proposed, in which a shoulder support may be fitted separately as required. These embodiments, however, have the disadvantage that since the shoulder support is not connected with the weapon and must be applied as a separate part the manipulation becomes complicated. On the other hand it has also been proposed to secure the support to the weapon by a hinge and to fold back the same onto the weapon when not required. These embodiments are also complicated ln use and moreover the shoulder support when folded' back against the weapon is found to be obstructive. and in certain circumstances' may interfere very considerably with the manipulation o the weapon. Shoulder supports which merely require to be withdrawn towards the rear also form in the noneoperable position a considerable obstruction to the manipulation, and they preclude the possibility of the butt of the weapon being held properly in the hand.

In contradistinction to the known. arrangements there is provided in accordance with the invention a retractable shoulder support, which forms in the position of rest a portion of the butt of the pistol, the support being accommm dated in a recess in the butt and lying flush with the same. When the support is retracted the recess in the butt is covered by a plate, which is arranged in resilient fashion within the butt, and when the support is withdrawn the plate moves outwards until it is flush with the outer edge of the butt. The shoulder support is connected with a pair of holding arms, which are guided within the stock of the weapon. and each of these arms may be so divided by means of a joint having a horizontally disposed hinge-pin that the support may be adjusted in height as desired. In this connection advantage will also U be found to exist in disposing the pivot of the stock, which is capable oi being swung away from the chamber, to such extent towards the front that it is situated in front of the holding members for the support which are introduced into the stock, whilst the other end of the stock is connected with the end cap of the chamber by a projection engaging a recess.

In this way the shoulder support in the position of rest is situated entirely within the weapon without forming the least obstruction, and in the position of use the manipulation is in no way `5I affected as even after the shoulder support has been retracted the form of the butt remains unaltered.

A possible form of embodiment of the invention is illustrated by way of example in the ac- 10 companying drawing.

Fig. l is a longitudinal section through part of a machine pistol showing the shoulder support according to the invention in the position of rest. The retracted position of the support is 15 indicated in dash-dotted lines.

Fig. 2 is a cross-.section taken along the line II-II in Fig. l, whilst Fig. 3 is a crosssection along the line III-III 1n Fig. 1.

The chamber I, which also forms the casing for the barrel, contains the bolt. With the chamber I there is rmly connected the sleeve or ammunition feeding casing 2. There is also mounted on the chamber I, a hinge 2a, by means 25 of which there is pivotally secured the stock 3. The stock 3 is furnished with a grip or butt 3a, which possesses at the rear a recess 3b. This recess accommodates the shoulder support d. which is so formed that it lls out the recess tb and thus completes the external form of the butt necessary for proper manipulation of the weapon.

As shown quite clearly in Fig. 2, there are secured laterally in the support L'. two arms 5 which, in accordance with Fig. 3, are disposed within the stock 3 and are shiftable in a longitudinal direction. The front ends of the arms 5 extend to within close proximity to the hinge 2a (Fig. l). In the vicinity of the front and the rear ends the arms 5 are furnished with grooves i0, which are, for example, semi-circular in form and may be engaged by a lever 'I at the rear of the stock to secLue the arms against longitudinal displacement.

The arms 5 are also divided approximately 5 mid-way of their length and are joined together by means o horizontal hinge pins 5a.

In the recess 3b of the butt 3a there is provided below the support in an additional recess 3c a plate 6, which is also shaped in adaptation to the external form of the butt. The plate 6 is furnished with pins Il which extend approx mately horizontally towards the front and are capable of sliding in guides I2 in the butt. These guides I2 are widened out in iront of and behind a constricted portion I3 which allows the passage only of the pins H, the object of this enlargement being to provide room on the one hand for the heads M of the pins and on the other hand for springs i5, which are placed about the pins Il and bear against the constricted portions I3.

At the rear end of the chamber i there is provided a projection i6, which for the purpose of locking the stock and the chamber in relation to each other co-operates with a pawl H on the grip, which pawl is capable of being released in the manner known per se.

The operation is as follows:

Under normal conditions the weapon will be employed without shoulder support, which in this case, as shown in Fig. l, is pushedv into the butt 3a and imparts to the latter the completeform by means of which the Weapon may be Yheld properly in the hand. The arms are then located within the stock 3 and are rmly held by the lever l, which engages in the rear groove lil- At the same time the plate 6 in the butt 3a is pressed inwards into the recess 3c against the action of the springs l5.

When the shoulder support is required the lever is turned so that it moves out of the rear groove Hl, and the support 4 may then be withdrawn towards the rear. The arms 5 also slide towards the rear in the guides within the stock until the front groove il] in the arms 5 is situated in front of the lever l, which is then either again turned into the locking position according to Fig. l or returns to this position automatically. 'Ihe shoulder support @i and the arms then assume the position shown in dash-dotted lines in Fig. l, and the rear portion of the arms 5 together with the support d may be adjusted to a higher or lower level by rocking about the pins 5a. f

Upon the retraction of the support li from the butt 3a the plate 6 is released and-guided by the pins H, it moves outwards under the action of the springs i5 until it covers the recess 3b, so that the butt also possesses the complete form even when the shoulder support is withdrawn. The headsv i4 ofthe pins serve to limit the eX- tent of the outward movement of the plate 6.

When the shoulder support is no longer required the lever l is again turned until the arms 5 have been released, and the support may then again be introduced into the butt 3a, the plate 6 also being returned to its original position. Locking is again performed by means of the lever 7, so that the parts have then again assumed the position according to Fig. 1.

It will be understood that no limitation is made to the specific form of embodimentshown, and that numerous modifications are quite possible within the meaning of the above description and the annexed claims Without departing from the spirit of the invention. f

What I claim as new and desire to secure by Letters Patent is:

1. In a firearm having a butt, a retractable shoulder support mounted upon said butt and a movable plate also mounted upon said butt to supplement the form of said butt when said support is retracted.

2. In a firearm having a stock, a retractable shoulder supPOrt, means located normally within said stock for guiding said support into its retracted position, means for locking said means in various positions and a resilient plate to supplementv the form of the'b-utt of said firearm when said support is retracted.

3. In a rearm having a chamber member, a stockpivoted to said member, a retractablev shoulder support, arms slidable in` said stock supporting said support, said stock being pivoted to said member at a point adjacent one end of said arms, a butt upon said stock adapted to receive said support when not in use, a pawl on said butt and a projection onV said member adapted to engage said pawl.

4. In a firearm. in pistol form having a handle and a recess at the rear end of this handle, a withdrawable shoulder support for converting the weapon into one with a shoulder rest, and having such dimensions that it can be disposed in said recess so that it lies ush withthe gripping surface of said handle.

5. In a rearm in pistol form a stock, a shoul der rest adapted to be drawn out and serving to convert theweapon into one with a shoulder support and which can be disposed in a recess pro vided in the handle of the Weapon, supporting arms for said shoulder rest guided in the stock and means for holding these arms in their outermost positions'.

HUGO SCHMEISSER. 

